29 gallon tank, 15 gallon sump/fuge.....water change ___ Gallons?

[MPevine11]

i need help with how many gallons i should change out weekly.......
29 gallon biocube hqi
15 gallon sump/fuge in the stand





also i just got my own RODI system, i now have 0TDS water
(was buying from pet store and the TDS was high.)

should i do a large waterchange with the 0tds water? (i have alot of cyane on my sand bed and starting to go on my rocks) so sould i increase this waterchange by bit?

how many gallons should i do weeky?



thank you all
-mikepevine-

 

[delta]

I would do 25% water changes weekly until the problem is solved. Blow off your LR with a PH before the water change and siphon off any detritus you can find.

although depending on tank age it may just be a part of the cycle. I find at 7-8month
many experience a mild cyano outbreak. but better to keep it in check than battle it once it is out of control

 

[JD'sReef]

I do 5gal every week or two for a 46display with a 10gallon sump; however, I have a large skimmer for the system. I think they say a 10% water change ever week, but don't quote me on that.
J.

PS- 0 TSD water changes will always help with the Cyane.

 

[MPevine11]

right now the tabk is at 4 months.

i have cheato in the fuge, tunze 9002 skimmer, chemi-pure and waterchanges to help with the alage........



so i should do like 11 gallon waterchanges?